:root {
  --ink: #0f1c2e;
  --ink-soft: #243447;
  --fog: #d9e3ec;
  --mist: #eef3f7;
  --paper: #f4f1ea;
  --signal: #0f766e;
  --signal-bright: #14b8a6;
  --ember: #c2410c;
  --line: color-mix(in srgb, var(--ink) 12%, transparent);
  --header-h: 4.25rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  background: var(--mist);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--signal);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--ink);
  color: var(--mist);
  border-radius: 0.35rem;
}

.skip-link:focus {
  top: 1rem;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: color-mix(in srgb, var(--mist) 78%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--mist) 92%, transparent);
}

.logo,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.logo:hover {
  color: var(--ink);
}

.logo-mark {
  width: 0.85rem;
  height: 0.85rem;
  background: linear-gradient(135deg, var(--signal-bright), var(--signal));
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}

.nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.nav a:hover {
  color: var(--ink);
}

.nav-cta {
  padding: 0.45rem 0.95rem;
  border: 1px solid var(--ink);
  border-radius: 0.3rem;
  color: var(--ink) !important;
  transition: background 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.nav-cta:hover {
  background: var(--ink);
  color: var(--mist) !important;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 1.35rem;
  background: var(--ink);
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 auto;
  z-index: 49;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.25rem 1.5rem;
  background: color-mix(in srgb, var(--mist) 96%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav a {
  padding: 0.85rem 0.25rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
}

@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .nav-toggle,
  .mobile-nav {
    display: none !important;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.35rem;
  border-radius: 0.3rem;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  transition: transform 0.2s var(--ease-out), background 0.2s, color 0.2s,
    border-color 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--ink);
  color: var(--mist);
  border: 1px solid var(--ink);
}

.btn-primary:hover {
  background: var(--signal);
  border-color: var(--signal);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid color-mix(in srgb, var(--ink) 28%, transparent);
}

.btn-ghost:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.btn-lg {
  padding: 1rem 1.6rem;
  font-size: 1.05rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  padding: calc(var(--header-h) + 2rem) clamp(1.25rem, 4vw, 3rem) 4.5rem;
  overflow: hidden;
  color: var(--mist);
  background: #0a1524;
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, #7dd3c0 14%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, #7dd3c0 14%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 20%, transparent 75%);
  opacity: 0.45;
  animation: grid-drift 28s linear infinite;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
}

.hero-glow-a {
  width: min(55vw, 520px);
  height: min(55vw, 520px);
  top: 8%;
  right: 5%;
  background: color-mix(in srgb, var(--signal-bright) 35%, transparent);
  animation: glow-pulse 8s ease-in-out infinite;
}

.hero-glow-b {
  width: min(45vw, 420px);
  height: min(45vw, 420px);
  bottom: 5%;
  left: -5%;
  background: color-mix(in srgb, #c2410c 22%, transparent);
  animation: glow-pulse 10s ease-in-out infinite reverse;
}

.hero-scan {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    color-mix(in srgb, var(--signal-bright) 8%, transparent) 50%,
    transparent 100%
  );
  background-size: 100% 220%;
  animation: scan 9s ease-in-out infinite;
  opacity: 0.55;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 44rem;
  opacity: 0;
  transform: translateY(1.25rem);
  animation: rise-in 0.9s var(--ease-out) 0.15s forwards;
}

.hero-brand {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.75rem, 9vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: #fff;
}

.hero-title {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.2vw, 2.15rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: color-mix(in srgb, #fff 88%, var(--signal-bright));
}

.hero-lede {
  margin: 0 0 2rem;
  max-width: 36rem;
  color: color-mix(in srgb, var(--mist) 78%, transparent);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero .btn-primary {
  background: var(--signal-bright);
  border-color: var(--signal-bright);
  color: #042f2e;
}

.hero .btn-primary:hover {
  background: #fff;
  border-color: #fff;
  color: var(--ink);
}

.hero .btn-ghost {
  color: var(--mist);
  border-color: color-mix(in srgb, var(--mist) 35%, transparent);
}

.hero .btn-ghost:hover {
  border-color: var(--mist);
  color: #fff;
}

/* Sections shared */
.section-head {
  max-width: 38rem;
  margin-bottom: 3rem;
}

.eyebrow {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal);
}

.section-head h2,
.contact h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.section-lede {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

/* Services */
.services {
  padding: clamp(4rem, 10vw, 7rem) clamp(1.25rem, 4vw, 3rem);
  background:
    linear-gradient(180deg, var(--mist), var(--paper) 40%, var(--paper));
}

.service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.service-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem 1.75rem;
  padding: 1.65rem 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(0.75rem);
  transition: opacity 0.55s var(--ease-out), transform 0.55s var(--ease-out);
  transition-delay: calc(var(--i) * 0.06s);
}

.service-item.is-visible {
  opacity: 1;
  transform: none;
}

.service-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--signal);
  padding-top: 0.35rem;
}

.service-item h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.service-item p {
  margin: 0;
  max-width: 42rem;
  color: var(--ink-soft);
}

@media (min-width: 900px) {
  .service-item {
    grid-template-columns: 3.5rem 1fr;
    gap: 2rem;
    padding: 2rem 0;
  }

  .service-item h3 {
    font-size: 1.55rem;
  }
}

/* Approach */
.approach {
  padding: clamp(3rem, 8vw, 5rem) clamp(1.25rem, 4vw, 3rem)
    clamp(4rem, 10vw, 7rem);
  background: var(--paper);
}

.approach-panel {
  position: relative;
  padding: clamp(2rem, 5vw, 3.5rem);
  background:
    radial-gradient(ellipse 80% 60% at 100% 0%, color-mix(in srgb, var(--signal-bright) 16%, transparent), transparent 55%),
    linear-gradient(145deg, #102033, #0c1828 55%, #132536);
  color: var(--mist);
  overflow: hidden;
}

.approach-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, #fff 6%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, #fff 6%, transparent) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  pointer-events: none;
}

.approach-panel > * {
  position: relative;
}

.approach .eyebrow {
  color: var(--signal-bright);
}

.approach .section-lede {
  color: color-mix(in srgb, var(--mist) 72%, transparent);
}

.approach-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.approach-steps li {
  display: grid;
  gap: 0.35rem;
  padding-top: 1.25rem;
  border-top: 1px solid color-mix(in srgb, #fff 14%, transparent);
}

.approach-steps strong {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.approach-steps span {
  color: color-mix(in srgb, var(--mist) 70%, transparent);
}

@media (min-width: 800px) {
  .approach-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .approach-steps li {
    padding-top: 1.5rem;
  }
}

/* Contact */
.contact {
  padding: clamp(4rem, 10vw, 7rem) clamp(1.25rem, 4vw, 3rem);
  background:
    linear-gradient(180deg, var(--paper), var(--mist));
}

.contact-inner {
  max-width: 36rem;
}

.contact .btn {
  margin-top: 2rem;
}

/* Footer */
.site-footer {
  display: grid;
  gap: 0.75rem;
  padding: 2.5rem clamp(1.25rem, 4vw, 3rem) 3rem;
  border-top: 1px solid var(--line);
  background: var(--mist);
}

.footer-tag {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 0.5rem;
}

.footer-nav a {
  font-size: 0.92rem;
  color: var(--ink-soft);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--signal);
}

/* Legal pages */
.legal-page {
  padding: calc(var(--header-h) + 3rem) clamp(1.25rem, 4vw, 3rem) 5rem;
  max-width: 46rem;
}

.legal-page h1 {
  margin: 0 0 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.03em;
}

.legal-page h2 {
  margin: 2rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.legal-page h3 {
  margin: 1.5rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
}

.legal-page p,
.legal-page li {
  color: var(--ink-soft);
}

.legal-note {
  padding: 1rem 1.15rem;
  margin-bottom: 2rem;
  background: color-mix(in srgb, var(--ember) 10%, var(--paper));
  border-left: 3px solid var(--ember);
  font-size: 0.95rem;
}

/* Motion */
@keyframes rise-in {
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes glow-pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

@keyframes scan {
  0%,
  100% {
    background-position: 0% 0%;
  }
  50% {
    background-position: 0% 100%;
  }
}

@keyframes grid-drift {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-56px, -56px, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-inner,
  .service-item,
  .hero-grid,
  .hero-glow,
  .hero-scan {
    animation: none !important;
    transition: none !important;
    opacity: 1;
    transform: none;
  }
}